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What is difference between Hadoop and Spark?

Answer»
SparkHadoop
It's a Data Analytics EngineIt is a Big Data PROCESS Engine
Used to Process real-time data, using real-time EVENTS like Twitter and FacebookBATCH processing with a huge volume of data
Has a Low latency computingHas a High latency computing
Can process data extracted interactivelyProcess the data extracted in batch mode
It is easier to use, enables a user to process data using high-level OPERATORS through abstractionsHadoop's model is a bit COMPLEX, need to handle low-level APIs
Has an in-memory computation, thus, no external scheduler is requiredThe external job scheduler is required for memory computation
It is a bit less secure as compare to HadoopHighly secure
Costlier than HadoopLess Costly


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